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264 lines
7.5 KiB
264 lines
7.5 KiB
5 months ago
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import { inspect } from '../jsutils/inspect.mjs';
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import { keyMap } from '../jsutils/keyMap.mjs';
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import { printPathArray } from '../jsutils/printPathArray.mjs';
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import { GraphQLError } from '../error/GraphQLError.mjs';
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import { Kind } from '../language/kinds.mjs';
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import { print } from '../language/printer.mjs';
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import { isInputType, isNonNullType } from '../type/definition.mjs';
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import { coerceInputValue } from '../utilities/coerceInputValue.mjs';
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import { typeFromAST } from '../utilities/typeFromAST.mjs';
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import { valueFromAST } from '../utilities/valueFromAST.mjs';
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/**
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* Prepares an object map of variableValues of the correct type based on the
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* provided variable definitions and arbitrary input. If the input cannot be
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* parsed to match the variable definitions, a GraphQLError will be thrown.
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*
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* Note: The returned value is a plain Object with a prototype, since it is
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* exposed to user code. Care should be taken to not pull values from the
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* Object prototype.
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*/
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export function getVariableValues(schema, varDefNodes, inputs, options) {
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const errors = [];
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const maxErrors =
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options === null || options === void 0 ? void 0 : options.maxErrors;
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try {
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const coerced = coerceVariableValues(
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schema,
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varDefNodes,
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inputs,
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(error) => {
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if (maxErrors != null && errors.length >= maxErrors) {
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throw new GraphQLError(
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'Too many errors processing variables, error limit reached. Execution aborted.',
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);
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}
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errors.push(error);
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},
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);
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if (errors.length === 0) {
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return {
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coerced,
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};
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}
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} catch (error) {
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errors.push(error);
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}
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return {
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errors,
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};
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}
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function coerceVariableValues(schema, varDefNodes, inputs, onError) {
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const coercedValues = {};
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for (const varDefNode of varDefNodes) {
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const varName = varDefNode.variable.name.value;
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const varType = typeFromAST(schema, varDefNode.type);
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if (!isInputType(varType)) {
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// Must use input types for variables. This should be caught during
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// validation, however is checked again here for safety.
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const varTypeStr = print(varDefNode.type);
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onError(
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new GraphQLError(
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`Variable "$${varName}" expected value of type "${varTypeStr}" which cannot be used as an input type.`,
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{
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nodes: varDefNode.type,
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},
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),
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);
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continue;
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}
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if (!hasOwnProperty(inputs, varName)) {
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if (varDefNode.defaultValue) {
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coercedValues[varName] = valueFromAST(varDefNode.defaultValue, varType);
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} else if (isNonNullType(varType)) {
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const varTypeStr = inspect(varType);
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onError(
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new GraphQLError(
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`Variable "$${varName}" of required type "${varTypeStr}" was not provided.`,
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{
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nodes: varDefNode,
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},
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),
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);
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}
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continue;
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}
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const value = inputs[varName];
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if (value === null && isNonNullType(varType)) {
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const varTypeStr = inspect(varType);
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onError(
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new GraphQLError(
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`Variable "$${varName}" of non-null type "${varTypeStr}" must not be null.`,
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{
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nodes: varDefNode,
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},
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),
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);
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continue;
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}
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coercedValues[varName] = coerceInputValue(
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value,
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varType,
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(path, invalidValue, error) => {
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let prefix =
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`Variable "$${varName}" got invalid value ` + inspect(invalidValue);
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if (path.length > 0) {
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prefix += ` at "${varName}${printPathArray(path)}"`;
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}
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onError(
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new GraphQLError(prefix + '; ' + error.message, {
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nodes: varDefNode,
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originalError: error,
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}),
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);
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},
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);
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}
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return coercedValues;
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}
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/**
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* Prepares an object map of argument values given a list of argument
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* definitions and list of argument AST nodes.
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*
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* Note: The returned value is a plain Object with a prototype, since it is
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* exposed to user code. Care should be taken to not pull values from the
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* Object prototype.
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*/
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export function getArgumentValues(def, node, variableValues) {
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var _node$arguments;
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const coercedValues = {}; // FIXME: https://github.com/graphql/graphql-js/issues/2203
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/* c8 ignore next */
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const argumentNodes =
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(_node$arguments = node.arguments) !== null && _node$arguments !== void 0
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? _node$arguments
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: [];
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const argNodeMap = keyMap(argumentNodes, (arg) => arg.name.value);
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for (const argDef of def.args) {
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const name = argDef.name;
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const argType = argDef.type;
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const argumentNode = argNodeMap[name];
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if (!argumentNode) {
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if (argDef.defaultValue !== undefined) {
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coercedValues[name] = argDef.defaultValue;
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} else if (isNonNullType(argType)) {
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throw new GraphQLError(
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`Argument "${name}" of required type "${inspect(argType)}" ` +
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'was not provided.',
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{
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nodes: node,
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},
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);
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}
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continue;
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}
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const valueNode = argumentNode.value;
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let isNull = valueNode.kind === Kind.NULL;
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if (valueNode.kind === Kind.VARIABLE) {
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const variableName = valueNode.name.value;
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if (
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variableValues == null ||
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!hasOwnProperty(variableValues, variableName)
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) {
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if (argDef.defaultValue !== undefined) {
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coercedValues[name] = argDef.defaultValue;
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} else if (isNonNullType(argType)) {
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throw new GraphQLError(
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`Argument "${name}" of required type "${inspect(argType)}" ` +
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`was provided the variable "$${variableName}" which was not provided a runtime value.`,
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{
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nodes: valueNode,
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},
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);
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}
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continue;
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}
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isNull = variableValues[variableName] == null;
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}
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if (isNull && isNonNullType(argType)) {
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throw new GraphQLError(
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`Argument "${name}" of non-null type "${inspect(argType)}" ` +
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'must not be null.',
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{
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nodes: valueNode,
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},
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);
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}
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const coercedValue = valueFromAST(valueNode, argType, variableValues);
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if (coercedValue === undefined) {
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// Note: ValuesOfCorrectTypeRule validation should catch this before
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// execution. This is a runtime check to ensure execution does not
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// continue with an invalid argument value.
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throw new GraphQLError(
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`Argument "${name}" has invalid value ${print(valueNode)}.`,
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{
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nodes: valueNode,
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},
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);
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}
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coercedValues[name] = coercedValue;
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}
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return coercedValues;
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}
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/**
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* Prepares an object map of argument values given a directive definition
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* and a AST node which may contain directives. Optionally also accepts a map
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* of variable values.
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*
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* If the directive does not exist on the node, returns undefined.
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*
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* Note: The returned value is a plain Object with a prototype, since it is
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* exposed to user code. Care should be taken to not pull values from the
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* Object prototype.
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*/
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export function getDirectiveValues(directiveDef, node, variableValues) {
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var _node$directives;
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const directiveNode =
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(_node$directives = node.directives) === null || _node$directives === void 0
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? void 0
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: _node$directives.find(
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(directive) => directive.name.value === directiveDef.name,
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);
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if (directiveNode) {
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return getArgumentValues(directiveDef, directiveNode, variableValues);
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}
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}
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function hasOwnProperty(obj, prop) {
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return Object.prototype.hasOwnProperty.call(obj, prop);
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}
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